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8. Solution of Simultaneous Linear Equations
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Q7 of 75 Page 8

Mark the correct alternative in the following:

Let a, b, c be positive real numbers. The following system of equations in x, y and z


has


The given system of linear equations is :-


+ - = 1


- + = 1


- + + = 1


Let = p , = q , = r


The equation becomes,


+ - = 1


- + = 1


- + + = 1


The matrix equation corresponding to the above system of equation is



Let A =


|A| =


Taking common from , from and from we get,


|A| = = 0


A unique solution exists.

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5

Mark the correct alternative in the following:

The system of linear equations:


x + y + z = 2


2x + y – z = 3


3x + 2y + kz = 4 has a unique solution if


6

Mark the correct alternative in the following:

Consider the system of equations:


a1x + b1y + c1z = 0


a2x + b2y + c2z = 0


a3x + b3y + c3z = 0


If then the system has


8

Mark the correct alternative in the following:

For the system of equations:


x + 2y + 3z = 1


2x + y + 3z = 2


5x + 5y + 9z = 4


9

Mark the correct alternative in the following:

The existence of the unique solution of the system of equations:


x + y + z = λ


5x – y + μz = 10


2x + 3y – z = 6 depends on


Questions · 75
8. Solution of Simultaneous Linear Equations
1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 4 4 4 4 4 4 5 6 7 8 8 8 8 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6
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